71809 CD/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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71809 CD/P4 Bearing Product Overview & Core Advantages
The 71809 CD/P4 is a single-row angular contact ball bearing designed for applications demanding high precision and superior running accuracy. Its key advantage lies in its ability to accommodate combined radial and axial loads simultaneously, making it an ideal choice for high-speed spindles and precision machinery. Manufactured to a P4 (ABEC-7) tolerance class, this bearing ensures exceptional dimensional stability and rotational precision. The phenolic resin cage and optimized internal geometry contribute to its high-speed capability and smooth operation, providing a compact and reliable solution for demanding applications.
71809 CD/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71809 | Basic bearing series and size designation. |
| CD | Indicates a specific contact angle of 15° and is optimized for high rigidity and high-speed operation. |
| P4 | Specifies the tolerance class, equivalent to ABEC-7, denoting very high precision in dimensions and running accuracy. |
71809 CD/P4 Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: The P4 tolerance class and 15° contact angle provide excellent dimensional accuracy and high rigidity, essential for minimizing deflection under load in precision equipment.
- Optimized for High Speeds: The lightweight phenolic resin cage reduces centrifugal forces, enabling a high limiting speed of 34,000 rpm. The open design facilitates efficient lubrication and heat dissipation.
- Superior Load Capacity: Engineered to handle significant combined radial and axial loads (Radial dynamic load: 1098 lbf, Static load: 1092 lbf), ensuring reliable performance in demanding conditions.
- Pre-lubricated & Ready-to-Use: The bearing is supplied lubricated, simplifying installation and providing immediate operational readiness.
71809 CD/P4 Bearing Typical Application Areas
The 71809 CD/P4 is engineered for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- High-Speed Pumps and Compressors
- Aerospace Instrumentation
